Changes between Version 2 and Version 3 of GcnSdwaDpp

Timestamp:

Jun 4, 2017, 7:00:31 PM (3 years ago)

Author:

trac

Comment:

--

GcnSdwaDpp

@@ -82 +82 @@
 </table>
 <p>The DST_SEL modifier determines which part of dword will hold first part (with same length)
-of destination dword will be placed. This make operation <code>(RESULT &amp; PARTMASK) &lt;&lt; PARTSHIFT</code>.
+of destination dword. This make operation <code>(RESULT &amp; PARTMASK) &lt;&lt; PARTSHIFT</code>.
 The SRC0_SEL and SRC1_SEL determines which part of source dword will be placed to first
 part of this source dword. This make operation <code>(SOURCE&gt;&gt;PARTSHIFT) &amp; PARTMASK</code>.
@@ -175 +175 @@
 (fill bits after part) to source operand while for source operand was not
 selected whole dword (SDWA_DWORD not choosen).</p>
+<p>Operation code:<br />
+<code>// SRC0_SRC = source SRC0, SRC1_SRC = source SRC1, DST_SRC = VDST source
+// SRC0_DST = dest. SRC0, SRC1_DST = dest. SRC1, DST_DST = VDST dest.
+// OPERATION(SRC0, SRC1) - instruction operation, VDST - VDST register before instruction
+if (HAVE_SRC0)
+{
+    switch(SRC0_SEL)
+    {
+        case SDWA_BYTE_0:
+            SRC0_DST = (SRC0_SEXT) ? INT32(INT8(SRC0_SRC &amp; 0xff)) : SRC0_SRC &amp; 0xff
+            break;
+        case SDWA_BYTE_1:
+            SRC0_DST = (SRC0_SEXT) ? INT32(INT8((SRC0_SRC&gt;&gt;8) &amp; 0xff)) :
+                        (SRC0_SRC&gt;&gt;8) &amp; 0xff
+            break;
+        case SDWA_BYTE_2:
+            SRC0_DST = (SRC0_SEXT) ? INT32(INT8((SRC0_SRC&gt;&gt;16) &amp; 0xff)) :
+                        (SRC0_SRC&gt;&gt;16) &amp; 0xff
+            break;
+        case SDWA_BYTE_1:
+            SRC0_DST = (SRC0_SEXT) ? INT32(INT8(SRC0_SRC&gt;&gt;24)) : SRC0_SRC&gt;&gt;24
+            break;
+        case SDWA_WORD_0:
+            SRC0_DST = (SRC0_SEXT) ? INT32(INT16(SRC0_SRC &amp; 0xffff)) : SRC0_SRC &amp; 0xffff
+            break;
+        case SDWA_WORD_1:
+            SRC0_DST = (SRC0_SEXT) ? INT32(INT16(SRC0_SRC &gt;&gt; 16)) : SRC0_SRC &gt;&gt; 16
+            break;
+        case SDWA_DWORD:
+            SRC0_DST = SRC0_SRC
+            break;
+    }
+}
+if (HAVE_SRC1)
+{
+    switch(SRC1_SEL)
+    {
+        case SDWA_BYTE_0:
+            SRC1_DST = (SRC1_SEXT) ? INT32(INT8(SRC1_SRC &amp; 0xff)) : SRC1_SRC &amp; 0xff
+            break;
+        case SDWA_BYTE_1:
+            SRC1_DST = (SRC1_SEXT) ? INT32(INT8((SRC1_SRC&gt;&gt;8) &amp; 0xff)) :
+                        (SRC1_SRC&gt;&gt;8) &amp; 0xff
+            break;
+        case SDWA_BYTE_2:
+            SRC1_DST = (SRC1_SEXT) ? INT32(INT8((SRC1_SRC&gt;&gt;16) &amp; 0xff)) :
+                        (SRC1_SRC&gt;&gt;16) &amp; 0xff
+            break;
+        case SDWA_BYTE_1:
+            SRC1_DST = (SRC1_SEXT) ? INT32(INT8(SRC1_SRC&gt;&gt;24)) : SRC1_SRC&gt;&gt;24
+            break;
+        case SDWA_WORD_0:
+            SRC1_DST = (SRC1_SEXT) ? INT32(INT16(SRC1_SRC &amp; 0xffff)) : SRC1_SRC &amp; 0xffff
+            break;
+        case SDWA_WORD_1:
+            SRC1_DST = (SRC1_SEXT) ? INT32(INT16(SRC1_SRC &gt;&gt; 16)) : SRC1_SRC &gt;&gt; 16
+            break;
+        case SDWA_DWORD:
+            SRC1_DST = SRC1_SRC
+            break;
+    }
+}
+DST_SRC = OPERATION(SRC0,SRC1)
+UNT32 tmp
+switch(DST_SEL)
+{
+    case SDWA_BYTE_0:
+        tmp = DST_SRC &amp; 0xff
+        if (DST_UNUSED==SDWA_UNUSED_PAD)
+            DST_DST = tmp
+        else if (DST_UNUSED==SDWA_UNUSED_SEXT)
+            DST_DST = INT32(INT8(tmp))
+        else if (DST_UNUSED==SDWA_UNUSED_PRESERVE)
+            DST_DST = tmp | (VDST &amp; 0xffffff00)
+        break;
+    case SDWA_BYTE_1:
+        tmp = DST_SRC &amp; 0xff
+        if (DST_UNUSED==SDWA_UNUSED_PAD)
+            DST_DST = tmp &lt;&lt; 8
+        else if (DST_UNUSED==SDWA_UNUSED_SEXT)
+            DST_DST = INT32(INT8(tmp)) &lt;&lt; 8
+        else if (DST_UNUSED==SDWA_UNUSED_PRESERVE)
+            DST_DST = (tmp&lt;&lt;8) | (VDST &amp; 0xffff00ff)
+        break;
+    case SDWA_BYTE_2:
+        tmp = DST_SRC &amp; 0xff
+        if (DST_UNUSED==SDWA_UNUSED_PAD)
+            DST_DST = tmp &lt;&lt; 16
+        else if (DST_UNUSED==SDWA_UNUSED_SEXT)
+            DST_DST = INT32(INT8(tmp)) &lt;&lt; 16
+        else if (DST_UNUSED==SDWA_UNUSED_PRESERVE)
+            DST_DST = (tmp&lt;&lt;16) | (VDST &amp; 0xff00ffff)
+        break;
+    case SDWA_BYTE_3:
+        tmp = DST_SRC &amp; 0xff
+        if (DST_UNUSED==SDWA_UNUSED_PAD)
+            DST_DST = tmp &lt;&lt; 24
+        else if (DST_UNUSED==SDWA_UNUSED_SEXT)
+            DST_DST = INT32(INT8(tmp)) &lt;&lt; 24
+        else if (DST_UNUSED==SDWA_UNUSED_PRESERVE)
+            DST_DST = (tmp&lt;&lt;24) | (VDST &amp; 0x00ffffff)
+        break;
+    case SDWA_WORD_0:
+        tmp = DST_SRC &amp; 0xffff
+        if (DST_UNUSED==SDWA_UNUSED_PAD)
+            DST_DST = tmp
+        else if (DST_UNUSED==SDWA_UNUSED_SEXT)
+            DST_DST = INT32(INT16(tmp))
+        else if (DST_UNUSED==SDWA_UNUSED_PRESERVE)
+            DST_DST = tmp | (VDST &amp; 0xffff0000)
+        break;
+    case SDWA_WORD_1:
+        tmp = DST_SRC &amp; 0xffff
+        if (DST_UNUSED==SDWA_UNUSED_PAD)
+            DST_DST = tmp &lt;&lt; 16
+        else if (DST_UNUSED==SDWA_UNUSED_SEXT)
+            DST_DST = INT32(INT16(tmp)) &lt;&lt; 16
+        else if (DST_UNUSED==SDWA_UNUSED_PRESERVE)
+            DST_DST = (tmp&lt;&lt;16) | (VDST &amp; 0xffff)
+        break;
+    case SDWA_DWORD:
+        DST_DST = DST_SRC
+        break;
+}</code></p>
 }}}